1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2debb147722583c58b9a23c8aea4311fa299317090b072d37514bb9cc536a103. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90dfd021-cb38-4d2f-89ef-3366e31ead06.json and https://artists.proofprofile.net/proofs/artist/90dfd021-cb38-4d2f-89ef-3366e31ead06.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67563e755b6281d759b9973e43e76f701ae0d4125b49f66b9390c5abd5ecdffa. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1969004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ae07a76b9b0072d2b2cef51ca6700e343f475e19338df0dc7d356f18f64a37. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2011817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20213bac70fb7f59750426668f092032267142dd1d3097a591d9d5ad1da8431. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2537047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a54bd884dc55321a653875b2ef7dce676da2e83dfa76f7ed7092421affd595. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2537048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c81b2ac2c05414919ae8720c146c7deaa5cbcf9100ff8c1aee42b172eb9ae7. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2537050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223f18a4680bf44cc18652d88c7e0ecd8121bd586e721dd89f7a35045a144a35. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2537052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8426032b50c0577b2f911639695c26e1f73fb68d6403163f46da995c9e82f3ea. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2537055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09d5e64fda09fb0c5e806505aea645a861d42b03a46bef996fcdebe04e1d08f. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2537058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d2a760f36723722de6c2bc282a7688c3bf93f564d9e51f5c9123e76814cae3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2537358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abb6ad12f2dbd1100dcf65e954016e1f40c0cd817a5450e5e02c1ba2e1ea867. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2371387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ad16103b93d9a4df33acdd9708f4d07694e84a68f139689b158a4d8afcf649. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1435180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336c38222b8ec21767e82be0b56289d74b751f10b0d5d1cb8dce897003e61dc3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1435112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e03a91d9db2541a56c52595c2035707d91d31c06cd6f86532db73756b5eeff4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1341572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575c15c9d3137f20a77710703d904365a36dda7f117c221e7e2769cd377ca06d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1435181.
Coast to Coast LUV (feat. Dusty G. Fuller)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f8a86c6e3e61a887ba014e0e3bf19357fdd51768439ed799b3f1aceae8b148. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1435182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f1489e55142622a5c82d7b0d116f29ca7b23bef3ba441777cd2916e51a9a53. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1435183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181fddaf095904d11183400f4d78338d5c6a4e3b2215aa81e768a49fd7ecea1a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1435184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbd1ed906dd223e9d5dccf491aef21e125a19b2c0a5d161207a6855fabcb923. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1435185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160f98a16cb1c1c6107d3a3a3ec8599dc3a965ee9e8f6be55dddaa9b1c2183cc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1435186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9719b32909679ed535f1027dba447a10b77f409b5baac529fb43674d831e3cd9. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1435187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b70180a8114761cea033e44be7476fdac603309c1ddf0a8e777ae7d5a4202a5. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1435188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cbd66ce0ccc6e71dfcd055eee0d74c8eb7a83804201d859b04db4a726232e8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1435189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aeedbcbdb0ca822b9c666fcff224dbab0c777972482b6a1601d4bba49f34348. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1435190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35407b5091adf1fbfc3c8820cd4a9c16432fde129d05c38419703a5884e8c03c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1435191.
We Up (feat. Styles P, Curren$y & Nino Black)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd061216c32d86d21c308dde73d54c89df9125880001a80adfa22d31852727e74. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1435193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fff193b733eb9703fc55d01ba79a41765e3b32f6f370f36f89559dcfd6cd46. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1435194.